Here are some useful links to articles on library collections, services and weeding in the electronic era:
Scott Gillies & Carol Stephenson (2012): Three Libraries, Three Weeding Projects:
Collaborative Weeding Projects Within a Shared Print Repository, Collection Management, 37:3-4, 205-222. http://dx.doi.org/10.1080/01462679.2012.685420
Stross, Randall. Publishers vs. Libraries: An E-Book Tug of War. New York Times, December 24, 2011. http://www.nytimes.com/2011/12/25/business/for-libraries-and-publishers-an-e-book-tug-of-war.html?_r=1&hp (Thanks to Magda Teter for sharing this link.)
Tracy, Carla. On Mistakenly Shredding a Prized Collection. The Chronicle of Higher Education, Tuesday, July 26, 2011. http://chronicle.com/article/On-Mistakenly-Shredding-a/128366/
Holmes, Linda. Hard Choices: Do Libraries Really Destroy Books? NPR, October 12, 2011. http://www.npr.org/blogs/monkeysee/2011/10/12/141265066/hard-choices-do-libraries-really-destroy-books
Maine Shared Collections Initiative: http://www.maineinfonet.net/mscs/